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Physics · EUEE topic

Dynamics, work-energy and momentum: every EUEE question 2015–2017 E.C. (31 questions), solved

31 questions · 2015 ×8 · 2016 ×12 · 2017 ×11

Newton’s laws, work, energy, impulse and collisions from EUEE Physics 2015–2017 E.C.

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Grade 11 Unit 4: Dynamics · p. 111–154

2017 E.C.

2017 E.C. · natural · Q59 · Newton's second law / forces

A 2 kg object accelerates with 1.5 m/s² to the right on a horizontal frictionless surface under the action of two horizontal forces, F₁ and F₂. What should be the magnitude of F₁?

This item uses a figure in the original paper (not redrawn here).

A. 4 N
B. 3 N
C. 1 N
D. 2 N

Worked solutionUnofficial

Answer: A

Answer A: 4 N. The stem is: A 2 kg object accelerates with 1.5 m/s² to the right on a horizontal frictionless surface under the action of two horizontal forces, F₁ and F₂. What should be the magnitude of F₁? Letter A is the Abrari key for this Newton's second law / forces. Net force = ma = 2*1.5 = 3 N. F1 depends on F2's magnitude/direction shown in the figure. If F2 = 1 N opposing, F1 = 4 N (matches site answer A). Figure-dependent; accepting site answer A but marking review.

📖 G11 Physics, Unit 4, §4.3, p. 111“Explore the relationship between Force, Mass, and Acceleration.”

Unofficial — solved by Abrari, not an official EAES key.

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Frequently asked questions

Are these Physics answers official?: No. Every keyed letter on this page is unofficial — solved by Abrari from the past paper, then checked against the textbook when a stored quote exists. Abrari never calls an answer an official EAES or MoE key.
Is Abrari affiliated with the Ministry of Education or EAES?: Abrari is an independent study aid and is not affiliated with, endorsed by, or an official product of the Ethiopian Ministry of Education (MoE) or EAES.
Can I download the textbook PDF?: No. Abrari does not offer textbook downloads. Mapped units open in the on-site reader only.
How do I practice these questions timed?: Use the practice links on this page or go to https://abrari.app/#try. The web try-out and the Abrari app use the same unofficial question bank.